Tensions continue to flare in Ferguson, Mo.

Police walk through a cloud of smoke as they clash with protesters Wednesday, Aug. 13, 2014, in Ferguson, Mo. Protests in the St. Louis suburb rocked by racial unrest since a white police officer shot an unarmed black teenager to death turned violent Wednesday night, with some people lobbing molotov cocktails at police who responded with smoke bombs and tear gas to disperse the crowd.